Did the same thing to get a wedding registration appointment with the Berlin city administration, but used Ghostery instead of AWS+Twilio. The responsible administration department currently doesn’t give out appointments and advises not to plan weddings because they are so understaffed, but I didn’t feel like waiting.
Got a notification email from Gostery in the middle of the night, registered the only available slot et voilà!
I think it is a passing thing. Germany recently legalized Gay marriage and presumably that lead to a huge backlog of gay people finally wanting to marry.
So we both had life changing events. Its the real winning moment of a programmer when he is able to use his/her skills for a "non-work" task automation. Its more satisfying.